<template>
    <div class="sign-in-app">
        <sign-in-head></sign-in-head>
        <div class="sign-in-main">
            <transition name="component-fade" mode="out-in">
                <keep-alive>
                    <router-view></router-view>
                </keep-alive>
            </transition>
        </div>
    </div>
</template>
